The cache has nothing to do with the element Rutherfordium nor do I have any evidence that Lord Rutherford visited here. The library website states the street was probably named after him.
At the wp there is a sign board. Have a read then go for a wander.
The cache is hidden at S43 33.XXX E172 40.YYY where
XXX = First year repeated minus 1579
YYY = Second year repeated minus 1194